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| Titel |
Polycyclic aromatic hydrocarbons in post-fire soils of drained peatlands in western Meshchera (Moscow region, Russia) |
| VerfasserIn |
A. Tsibart, A. Gennadiev, T. Koshovskii, A. Watts |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1869-9510
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| Digitales Dokument |
URL |
| Erschienen |
In: Solid Earth ; 5, no. 2 ; Nr. 5, no. 2 (2014-12-16), S.1305-1317 |
| Datensatznummer |
250115358
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| Publikation (Nr.) |
 copernicus.org/se-5-1305-2014.pdf |
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| Zusammenfassung |
| Polycyclic aromatic
hydrocarbons (PAHs) are priority pollutants that arrive in the environment
from numerous anthropogenic and natural sources, but the data on their
natural sources including wildfires remain insufficient. The level of
contamination and the composition of PAHs in soils of the areas affected by
wildfires were studied in this work. The study was conducted in the Moscow
region (Russia) in areas occupied by drained peatland and strongly damaged by
fires in 2002, 2010 and 2012. The features of PAH accumulation and the
profile distributions in histosols and histic podzols after the fires of
different times were analyzed. It was shown that new soil horizons formed
after the fires – Cpir, Hpir and incipient O horizons – and that these
horizons differ in PAH accumulation rate. Maximal total concentrations of 14
PAHs were detected in charred peat horizons Hpir (up to 330 ng g−1)
and in post-fire incipient O horizons (up to 180 ng g−1), but the
high-molecular-weight PAHs (benz(ghi)perylene, benz(a)pyrene,
benz(k)fluoranthene) were revealed only in charry peat horizons. The trends
of higher PAH concentrations were found in cases when smoldering combustion
resulted in rather thick residual peat horizons. In cases of almost complete
pyrogenic destruction of He horizons, total PAH concentrations were no more
than 50 ng g−1. Also, PAH accumulation in upper horizons of soils near
the sites of the latest fires was observed. |
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